As early as 1792 Scott had written for the Speculative Society an essay on the authenticity of Ossian's poems, and one of his articles for the _Edinburgh Review_ in 1805 was on the same subject, occasioned by a couple of important documents which supported opposite sides, and which, he said, set the question finally at issue. This article represents Scott the critic in a typical attitude. The material was almost altogether furnished in the works which he was surveying.[93] His task was to distinguish the essential points of the problem, to state them plainly, and to weigh the evidence on each side. In this he shows notable clearness of thought, and also, throughout the rather long treatment of a complicated subject, great lucidity in arrangement and statement. He was led by this study to change the opinion which he had held in common with most of his countrymen, and to adopt the belief that the poems were essentially creations of Macpherson, with only the names and some parts of the story adopted from the Gaelic.[94] Other references to Ossian occur in Scott's writings, and it is evident in this case, as in many others, that an investigation of the matter in his early career, whether from original or from secondary sources, gave him material for allusion and comment throughout his life. For, as we have constant occasion to remark in studying Scott, with a very definite grasp of concrete fact he combined a vigorous generalizing power, and all the parts of his knowledge were actively related. He seems to have made little preparation for some of his most interesting reviews, but to have utilized in them the store gathered in his mind for other purposes.